* {
    padding: 0;
    margin: 0;
    list-style: none;
    text-decoration: none;
    box-sizing: border-box;
    /* border: 1px solid red; */
}

.w {
    width: 80%;
    margin: 0 auto;
}

.head {
    position: fixed;
    left: 0;
    right: 0;
    height: 80px;
    background-color: rgb(0, 30, 43);
    border-bottom: 1px solid yellow;
    line-height: 80px;
    overflow: hidden;
    z-index: 999;
}

.head_left {
    width: 15%;
    float: left;
    margin-left: 5%;
    text-align: center;
}

.head_left h3 {
    color: white;
}

.head_right {
    /* width: 50%; */
    float: right;
    margin-right: 5%;
    /* padding-right: 5%; */
}

.head_right ul li {
    float: left;
    padding: 0 20px;
}

.head_right ul li a {
    color: white;
}

.head_right ul li a:hover {
    color: yellow;
}


/* ----------------------------------------------- */

.header {
    height: 800px;
    background: url(img/top-bg.jpg) fixed;
    background-size: 100%;
    /* background-position: -100% -100%; */
}

.title {
    position: relative;
    text-align: center;
    /* width: 45%;
    left: 30%; */
    /* margin: 0 auto; */
    padding-top: 250px;
}

.title p {
    font-size: 40px;
    color: white;
}

.title span {
    color: yellow;
}

.searchBox {
    position: relative;
    width: 40%;
    left: 30%;
    margin-top: 70px;
}

.search_top {
    text-align: center;
    position: relative;
    width: 60%;
    left: 20%;
    margin-bottom: 30px;
    color: white;
}

.searchInput {
    float: left;
    width: 75%;
}

.searchInput input {
    text-align: center;
    border-radius: 5px;
    font-size: 25px;
    height: 55px;
    width: 100%;
}

.baidu {
    float: left;
    width: 25%;
}

.baidu button {
    font-size: 25px;
    height: 55px;
    width: 100%;
    border-radius: 5px;
    background-color: yellow;
}


/* ----------------------------------------------------------- */

.portfolio {
    position: relative;
    background-color: rgb(235, 235, 235);
    /* height: 1200px; */
    margin-top: 10px;
}

.icon_up {
    position: relative;
    margin: 0 0 0 50%;
    left: -47px;
    padding-top: 30px;
}

.icon_down {
    text-align: center;
    font-size: 40px;
}

.cards {
    opacity: .6;
    margin-top: 100px;
}

.cards ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

.cards ul li {
    margin: 10px;
    float: left;
}

.cards img {
    height: 200px;
    padding-bottom: 5px;
}

.cards h2 {
    margin-left: 5px;
    padding-bottom: 10px;
}

.cards p {
    margin-left: 5px;
    word-wrap: break-word;
    padding-bottom: 5px;
}

.cards a {
    display: inline-block;
    margin-left: 5px;
    font-size: 20px;
    font-weight: 700;
    color: red;
}


/* --------------------------------------------------------------- */

.services {
    position: relative;
    /* height: 900px; */
}


/* ------------------------------------------- */

.letter {
    position: relative;
    margin-top: 10px;
    background-color: rgb(241, 194, 3);
    height: 300px;
}

.letter li {
    position: absolute;
    top: 10%;
    left: 15%;
    text-align: left;
}

.letter_content {
    position: absolute;
    font-size: 30px;
    top: 15%;
    left: 15%;
    text-align: left;
}


/* ----------------------------------- */

.blog {
    position: relative;
    /* height: 1200px; */
    margin-top: 10px;
    padding-bottom: 30px;
}

.cards2 {
    margin-top: 100px;
}

.cards2 ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

.cards2 ul li {
    float: left;
    margin: 10px;
}

.cards2 img {
    /* height: 100%; */
    /* width: 400px; */
    padding-bottom: 5px;
}

#mouth {
    text-align: right;
    padding-bottom: 5px;
}

.cards2 h2 {
    margin-left: 5px;
    padding-bottom: 10px;
}

.cards2 p {
    margin-left: 5px;
    word-wrap: break-word;
    padding-bottom: 5px;
}

.cards2 a {
    display: inline-block;
    margin-left: 5px;
    font-size: 20px;
    font-weight: 700;
    color: red;
}


/* --------------------------------------------- */

.contact {
    position: relative;
    margin-top: 10px;
    /* height: 2000px; */
    background-color: rgb(40, 40, 52);
}

.human {
    margin-top: 80px;
}

.human ul {
    width: 70%;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

.human ul li {
    color: white;
    float: left;
}

.human ul li img {
    border-radius: 50%;
}

.human ul li h2 {
    text-align: center;
}

.human ul li p {
    text-align: center;
}

.detial {
    text-align: center;
    margin-top: 150px;
}

.detial li {
    position: relative;
    line-height: 40px;
    color: white;
}

.detial li p {
    font-size: 30px;
}

.detial li span {
    font-weight: 200;
}

.icon1 {
    left: 50%;
    margin-top: 90px;
}

.icon_up1 {
    position: relative;
    margin: 0 0 0 50%;
    left: -48px;
}

.icon_down1 {
    text-align: center;
    font-size: 40px;
}

.table_list {
    position: relative;
    width: 80%;
    margin-top: 100px;
}

.table_input li {
    position: relative;
    float: left;
    margin: 10px;
    width: 48%;
}

.table_input li input {
    position: relative;
    height: 40px;
    width: 100%;
}

.table_text {
    margin-left: 10px;
}

.table_sub {
    margin-top: 20px;
    margin-left: 10px;
}

.table_text textarea {
    width: 98%;
    height: 150px;
    margin-bottom: 30px;
}

.table_sub button {
    width: 80px;
    height: 40px;
    margin-bottom: 40px;
    background-color: yellow;
}


/* --------------------------------------------------------- */

.footer {
    background-color: lightgray;
    height: 100px;
}

.footer p {
    line-height: 100px;
    text-align: center;
    color: white;
}

@media screen and (min-width: 1024px) {
    w {
        width: 32%;
        /*显示为 一行 3列*/
    }
}

@media screen and (min-width: 600px) and (max-width: 1024px) {
    w {
        width: 49%;
        /*显示为 一行 2列 */
    }
}

@media screen and (max-width: 599px) {
    w {
        width: 98%;
        /*显示为 一行 1列 */
    }
}